Question

m
$\frac{x}{13?} = 12$

Answer 1

$\frac{m}{13} = 12 \\ \\ by \: cross \: multiplication \: \\ \\ we \: get \\ \\ m = 12 \times 13 \\ \\ m = 156 \\ \\ hope \: this \: helps \: you$
(^^)✌

Answer 2

$\huge{heya\:mate}$

$\frac{x}{13?} = 12$

$\large{x= 12*13}$

$\huge{x = 156}$